The best man from a couple's wedding, just a year-and-a-half-ago, caught and exposed the cheating bride recently in a video that went viral.

The husband suspected his wife, who is only identified as Nina, of cheating. He heard which bar Nina was headed to that night and asked his best friend, who is only identified as James, to go check out what Nina was up to.

The video catches Nina sitting on top of a man at a bar, who she backs away from as soon as she is confronted by James.

"What's going on here?" James asked his best friend's wife.

"You know exactly what's going on here," she replied in the video 41-second video that topped four million page views as of Wednesday afternoon.

The man she was with pulled out his phone's flashlight right away to cover his face and hide his identity.

When James went back to his friend with the bad news the husband apparently went home, took the car, took her ring and gave her until the end of the day to move out.

The viral clip can be viewed below: